samfirm: handle EUX/EUY Firmwares

README.md

@@ -7,7 +7,9 @@ A streaming downloader, decryptor and extractor of Samsung firmware.
 ### Run
 
 1. Download the executable from [Release](https://github.com/jesec/samfirm.net/releases).
-1. Run it with `--region` and `--model` arguments.
+1. Run it with `--region` , `--model` and `--i` arguments.
+1. Region, Model and IMEI need to be valid for the target device, otherwise FUS will respond with Err 408
+1. If you dont have the IMEI of a certain device you want, usually googling <model> "imei swappa" will bring up valid ones
 
 Windows users may choose the smaller but not-self-contained variant if [.NET runtime](https://dotnet.microsoft.com/download/dotnet/5.0/runtime) is present.
 
@@ -21,7 +23,7 @@ Windows users may choose the smaller but not-self-contained variant if [.NET run
 ## Example
 
 ```
-> ./SamFirm -m SM-F916N -r KOO
+> ./SamFirm -m SM-F916N -r KOO -i <valid imei>
 
   Model: SM-F916N
   Region: KOO

SamFirm/Program.cs

@@ -17,6 +17,9 @@ public class Options
 
             [Option('r', "region", Required = true)]
             public string Region { get; set; }
+
+            [Option('i', "imei", Required = true)]
+            public string imei { get; set; }
         }
 
         private static string GetLatestVersion(string region, string model)
@@ -32,14 +35,16 @@ static void Main(string[] args)
         {
             string model = "";
             string region = "";
+            string imei = "";
             Parser.Default.ParseArguments<Options>(args)
                 .WithParsed(o =>
                 {
                     model = o.Model;
                     region = o.Region;
+                    imei = o.imei;
                 });
 
-            if (model.Length == 0 || region.Length == 0)
+            if (model.Length == 0 || region.Length == 0 || imei.Length == 0)
             {
                 return;
             }
@@ -67,7 +72,7 @@ static void Main(string[] args)
 
             string binaryInfoXMLString;
             responseStatus = Utils.FUSClient.DownloadBinaryInform(
-                Utils.Msg.GetBinaryInformMsg(version, region, model, Utils.FUSClient.NonceDecrypted), out binaryInfoXMLString);
+                Utils.Msg.GetBinaryInformMsg(version, region, model,imei, Utils.FUSClient.NonceDecrypted), out binaryInfoXMLString);
 
             XDocument binaryInfo = XDocument.Parse(binaryInfoXMLString);
             long binaryByteSize = long.Parse(binaryInfo.XPathSelectElement("./FUSMsg/FUSBody/Put/BINARY_BYTE_SIZE/Data").Value);

SamFirm/Properties/launchSettings.json

@@ -2,7 +2,7 @@
   "profiles": {
     "SamFirm.NET": {
       "commandName": "Project",
-      "commandLineArgs": "--model SM-F916N --region KOO"
+      "commandLineArgs": "--model SM-G965N --region KOO --i 00000000000000"
     }
   }
 }

SamFirm/SamFirm.csproj

@@ -4,6 +4,7 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>net5.0</TargetFramework>
     <StartupObject>SamFirm.Program</StartupObject>
+     <Version>1.3</Version>
     <Platforms>x64</Platforms>
     <Authors>Jesse Chan &lt;[email protected]&gt;</Authors>
   </PropertyGroup>

SamFirm/Utils/Auth.cs

@@ -69,8 +69,8 @@ public static byte[] EncryptStringToBytes(string plainText, byte[] Key)
 
     internal static class Auth
     {
-        private const string NONCE_KEY = "hqzdurufm2c8mf6bsjezu1qgveouv7c7";
-        private const string AUTH_KEY = "w13r4cvf4hctaujv";
+        private const string NONCE_KEY = "vicopx7dqu06emacgpnpy8j8zwhduwlh";
+        private const string AUTH_KEY = "9u7qab84rpc16gvk";
 
         public static string DecryptNonce(string nonce)
         {

SamFirm/Utils/FUSClient.cs

@@ -30,7 +30,7 @@ internal static class FUSClient
         public static int DownloadBinary(string path, string file, string saveTo)
         {
             long num = 0L;
-            HttpWebRequest wr = FUSRequest.Create("http://cloud-neofussvr.sslcs.cdngc.net/NF_DownloadBinaryForMass.do?file=" + path + file);
+            HttpWebRequest wr = FUSRequest.Create("http://cloud-neofussvr.samsungmobile.com/NF_DownloadBinaryForMass.do?file=" + path + file);
             wr.Method = "GET";
             wr.Timeout = 0x61a8;
             wr.ReadWriteTimeout = 0x61a8;

SamFirm/Utils/FUSMsg.cs

@@ -4,7 +4,7 @@ namespace SamFirm.Utils
 {
     internal static class Msg
     {
-        public static string GetBinaryInformMsg(string version, string region, string model, string nonce)
+        public static string GetBinaryInformMsg(string version, string region, string model, string imei, string nonce)
         {
             XDocument document = new XDocument(
                 new XElement("FUSMsg",
@@ -18,6 +18,10 @@ public static string GetBinaryInformMsg(string version, string region, string mo
                                 new XElement("Data", "1")),
                             new XElement("CLIENT_PRODUCT",
                                 new XElement("Data", "Smart Switch")),
+                            new XElement("CLIENT_VERSION",
+                                new XElement("Data", "4.3.23123_1")),
+                            new XElement("DEVICE_IMEI_PUSH",
+                                new XElement("Data", imei)),
                             new XElement("DEVICE_FW_VERSION",
                                 new XElement("Data", version)),
                             new XElement("DEVICE_LOCAL_CODE",
@@ -31,6 +35,35 @@ public static string GetBinaryInformMsg(string version, string region, string mo
                     )
                 );
 
+            // Add additional fields for EUX
+            if (region == "EUX")
+            {
+                document.Root.Element("FUSBody").Element("Put").Add(
+                    new XElement("DEVICE_AID_CODE",
+                        new XElement("Data", region)),
+                    new XElement("DEVICE_CC_CODE",
+                        new XElement("Data", "DE")),
+                    new XElement("MCC_NUM",
+                        new XElement("Data", "262")),
+                    new XElement("MNC_NUM",
+                        new XElement("Data", "01"))
+                );
+            }
+            // Add additional fields for EUY
+            else if (region == "EUY")
+            {
+                document.Root.Element("FUSBody").Element("Put").Add(
+                    new XElement("DEVICE_AID_CODE",
+                        new XElement("Data", region)),
+                    new XElement("DEVICE_CC_CODE",
+                        new XElement("Data", "RS")),
+                    new XElement("MCC_NUM",
+                        new XElement("Data", "220")),
+                    new XElement("MNC_NUM",
+                        new XElement("Data", "01"))
+                );
+            }
+
             return document.ToString();
         }